Ability to set default value and type on grouped component inputs

[AdRiley]

Design here

### Tasks
- [ ] https://github.com/enso-org/enso/issues/11406
- [ ] https://github.com/enso-org/enso/issues/11407
- [ ] https://github.com/enso-org/enso/issues/11408
- [ ] https://github.com/enso-org/enso/issues/11246
- [ ] https://github.com/enso-org/enso/issues/11247
- [ ] Default value widget: proper placeholders for functions' and cons' arguments.
- [ ] ----------------------------------
- [ ] Support for parameterized types
- [ ] Support for type unions (similarly to vector editor)
- [ ] Autmatic default values
- [ ] -----------------------------------
- [ ] Copy the widget configuration from existing nodes. - for next epic
- [ ] Edit the widget configuration - for next epic
- [ ] ------------------------------

[farmaazon]

Refinement notes:

• both default value and type should be special widgets. The type widget would influence what default value widget will match (but it will have picker in the future).
• We support only one-line method definitions
• The configuration for input's widgets should be copied from method called by nodes using this input (inside). - separate task.

[farmaazon]

There is a new design, so the last Refinement notes are no longer relevant.